- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00017875
Transcranial Magnetic Stimulation (TMS) Studies of Dystonia
Neurophysiological Studies of Focal and Generalized Forms of Dystonia Using Transcranial Magnetic Stimulation (TMS)
This study will use transcranial magnetic stimulation to examine how the brain controls muscle movement in focal and generalized types of dystonia. Dystonia is a movement disorder in which involuntary muscle contractions cause uncontrolled twisting or abnormal postures. Dystonia may be focal, involving just one region of the body, such as the hand, neck or face. Focal dystonia usually begins in adulthood. Generalized dystonia, on the other hand, generally begins in childhood or adolescence. Symptoms begin in one area and then become more widespread.
Healthy normal volunteers and patients with focal or generalized dystonia 8 years of age and older may be eligible for this study. First-degree relatives of patients will also be enrolled.
In transcranial magnetic stimulation, an insulated wire coil is placed on the subject's scalp and brief electrical currents are passed through the coil, creating magnetic pulses that pass into the brain. These pulses generate very small electrical currents in the cortex-the outer part of the brain-briefly disrupting the function of the brain cells in the stimulated area. The stimulation may cause muscle twitching or tingling in the scalp, face and limbs. During the stimulation, the subject will be asked to either keep the hand relaxed or to slightly tense certain muscles in the hand or arm. The test will last about 1.5 hours.
The cause of dystonia is unknown. It is hoped that a comparison of brain activity in normal volunteers, patients and their relatives not affected by dystonia will help scientists learn why some people develop dystonic movements.
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment
Contacts and Locations
Study Locations
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Maryland
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Bethesda, Maryland, United States, 20892
- National Institute of Neurological Disorders and Stroke (NINDS)
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
INCLUSION CRITERIA - Healthy Volunteers:
Healthy Volunteers entered into the study must be free of serious somatic disease as determined by a standard physical and neurological examination.
INCLUSION CRITERIA - Patients:
For patients, the only selection criteria are the presence of primary dystonia, either focal or generalized (DYT1).
Children aged 8 years or older will be included. Gender, ethnic origin and race will not be biased for inclusion.
EXCLUSION CRITERIA:
The exclusion criteria for this study include subjects who have a pacemaker, an implanted medication pump, a metal plate in the skull, metal objects inside the eye or skull (for example, after brain surgery or a shrapnel wound) or any recent (less than 3 months) brain lesions.
Study Plan
How is the study designed?
Collaborators and Investigators
Publications and helpful links
General Publications
- Nutt JG, Muenter MD, Melton LJ 3rd, Aronson A, Kurland LT. Epidemiology of dystonia in Rochester, Minnesota. Adv Neurol. 1988;50:361-5. No abstract available.
- Hallett M. The neurophysiology of dystonia. Arch Neurol. 1998 May;55(5):601-3. doi: 10.1001/archneur.55.5.601.
- Fahn S. Concept and classification of dystonia. Adv Neurol. 1988;50:1-8. No abstract available.
Study record dates
Study Major Dates
Study Start
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 010188
- 01-N-0188
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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